Wiper Problem m38 1952

joebuck · Posted: Sat Jul 20, 2013 9:59 am Post subject: Wiper Problem m38 1952

I have a 52 m38 wiper problem. My right wiper does not work. one thing I notice is that there is no vacuum coming from the motor to it like the left side which works fine. Any suggestions? Thanks

wesk · Posted: Sat Jul 20, 2013 10:26 am Post subject:

Check your plumbing.

If you have the standard fording plumbing then there are two lines feeding the vac side of each wiper and two going from the fresh air in side to the air cleaner.

If you do not have the fording plumbing then there are only the two lines coming from the left side of the windshield to each wiper's vac port.

If your plumbing is correct then:

Check suction (Vacuum) at the shutoff valve with a vacuum gauge. Should be 10" to 12" between idle and 2500 RPM.

If the suction is correct then:

Check the wiper motor for lube. Spray a little bit of WD40 in the suction side of the motor as you work it back and forth by hand.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php

joebuck · Posted: Sat Jul 20, 2013 10:43 am Post subject:

The suction side (right side of right wiper) has no suction coming from hose to air filter. Should it?

wesk · Posted: Sat Jul 20, 2013 11:24 am Post subject:

Suction comes from left on both wiper motors. Remember it's the vacuum pump and intake manifold doing the sucking! Left is as you sit in the driver's seat looking forward.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php

joebuck · Posted: Sun Jul 21, 2013 2:43 pm Post subject:

The suction side (right side of right wiper) has no suction coming from hose to air filter. Should it?

wesk · Posted: Sun Jul 21, 2013 10:07 pm Post subject:

Same question gets the same answer. The suction comes from the left side (driver's side) via the vacuum pump and the intake manifold. Not the right side.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php

joebuck · Posted: Mon Jul 22, 2013 5:47 pm Post subject:

The suction side (right side of right wiper) has no suction coming from hose to air filter. Should it?

wesk · Posted: Mon Jul 22, 2013 9:09 pm Post subject:

Now look harder at the information I have already presented you with Joe. It makes it quite clear that the wiper motor suction line gets it's suction from the vacuum pump. That leaves the second port (vent port) on the pump that has the hose going to the air cleaner without suction.

This should help you understand. Note both suction and vent ports are on the right side of the motor. References to holding finger over the end of are for the end of the removed hose not the metal ports.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php

Texbillhs

I am installing the wiper motors - I understand the no-fording plumbing. What I have a question on is with the fording lines. They follow the right windshield frame arm and go through a grommet in the fender (same as the left), where does it go under the hood?

Second minor question - does the valve bolt to the windshield sheet metal or the roundstock frame? I can't tell from the photos and my windshield is a new one without holes - you have to drill them. The valve I have is the kind with 2 mounting ears for the screws.
_________________
1952 M38

evanso1975 · Posted: Mon Jul 29, 2013 10:36 am Post subject:


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